OK, I've found some more information:
Sending to Zone 1 = 4,95 €, but 14,02 € is charged
Sending to Zone 2 = 10,95 €, but 20,02 € is charged
When deducting the correct fee from the calculated fee you get 9,07 (which is 7,4958 without 21% VAT).
So it looks that an additional 7,49 (or 7,50) excl. VAT is added to the shipping cost.
In the Carrier Preferences the Handling fees are set to 0.
What else can be configured to be added to the shipping cost?
- Niels